Suction air-strainer



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APP SEPT-4, 1919- 1,375,498, Patented Apr. 19, 1921.

Glaze QFEJP-mer? G. FARMER, OF PITTSBURGH, BENNSYLVAINIA, ASSIGNOR TO THE WESTING- HOUSE AIR BRAKE COMPANY, OF WIL'MEBDING, PENNSYLVANIA; A. CORPORATION OF PENNSYLVANIA. v

' s'ucrron .AIR-STRAINER Specification of Letters Patent. Pait gnted Apr. 1%, 1921.

Application filed. September 4, 1919. Serial no. 321,622.

To all whom it may 00mm:

Be it known that I, CLYDE C. FARMER, a citizen of the United States, residing at Pittsburgh, in the county of Allegheny and State of Pennslyvania, have invented new and useful Improvements in Suction Air- Strainers, of which the following is a specification.

This invention relates to air strainers, adapted more particularly for application to the suction .inlet of air compressors.

The principal object of my invention is to. provide an improved suction strainer which may be cheaply constructed and is adapted to be easily assembled and taken apart.

In the accompanying drawing, Figure 1 is a section on the line 1-1 of Fig. 2 of a suction strainer constructed in accordance with my invention; and Fig. 2 an end elevation thereof.

As shown in Fig. 1 of the drawing, the improved air strainer '1 is. applied to the suction inlet pipe 2 of an air compressor 3 and comprises a cylindrical casing 4 having an out-turned flange portion 5 at one end and an in-turned flange portion 6 at the opposite end.

In the annular space formed between the flange 6 and the body of the strainer, a cup.

shaped member 7 having perforations 8 is adapted to be inserted and within the casing 4 filter material such as curled hair 9 and preferably a layer of felt 10 is packed.

The filter material is held in place by inserting another cup shaped member 11, havingperforations 12, within the casing 4, as shown in the drawing.

A bracket casting 13 is secured to the suction inlet pipe 3 and is provided with a circular flange 14 adapted to fit inside of the member 11 and having an annular recess adapted to contain a packing ring 15.

In order to apply the strainer to the bracket 13, a clamping ring 16 having lugs 17 is provided, and said ring having been slipped over the casing from the rear end is pushed up so as to assume the position shown in Fig. 1 of the drawing, with the edge of the ring engaging Within the annular recess formed by the flange 5. Bolts 18 are then inserted through holes in the lugs 17 and registering holes in lugs 19 on the casting 13, and the parts are clamped tightly together by' screwing up the nuts on said bolts.

The packing ring or gasket 15 makes a tight joint, so as to prevent leakage of air.

Having now described my invention, what I claim as new, and desire to secure by Let-- ters Patent, is

1. An air strainer comprising a casing having an inwardly folded flange at one end forming a recess, a cup shaped member mounted in said recess,an outwardly turned flange at the opposite end of the casing, a bracket, and a ring engaging the outwardly turned flange to clamp the casing to the bracket.

2. An air strainer comprising a casing having an inwardly folded flange at one end forming a recess, a cup shaped member mounted-in said recess, another cup shaped member mounted in the casing at the opposite end, an outwardly turned flange at said opposite end of the casing, a bracket having a pipe connection, and a ring adapted to engage within the recess formed by the outwardly turned flange, and bolts for clamping the ring and thereby the casing to the bracket.

In testimony whereof I have hereunto set my hand.

CLYDE o. FARMER. 

